actually, if you are smart and sensible to move order peculiarities, its not hard to set up positions where you seem to be doing a hippo and do something more advantageous, here is for example a clever hippo feint
this is clever because by feigning a hippo via the b6 move order you get concession of early nf3 (blocking f pawn, the more dangerous pawn trio) and 0-0, no h4 worries, but then once white commits to c4 early which is the most dangerous set up, you play for be7-bf6, ne7-ng6 and c5. the advantages are multiple, without g6, the knight can go there, so now after c5 ,d5, black can play around the weakened dark squares with 3 minor pieces , also in some lines, after c5-d5, bxc3 doubling pawns, or even bxd4 if the knight hops there is possible but without having the weakened dark squares on the kingside that g6 leaves behind.
but mastering these subtle move order peculiarities is not easy. people play the hippo precisely to avoid memorizing opening subtleties like this. There is one top player who seems to play around with these (will he hippo, will he not) with b6 which is radjabov at least in rapid games.
I now have the Chess Giant's course, and the Andrew Martin Fritztrainer course, which you can stream directly from the Chessbase website if you don't have the Chessbase software.
Both are excellent and I highly recommend them!
Anybody who, like myself, has watched the Chess Giant's 114 Hippo videos on Youtube, will wonder why you would also want to pay for his Hippo course? But the course is structured in a 'start to finish' basis, and Solomon Ruddell walks you through all the theory, tips and tricks, so within the space of 6 hours you will have everything fresh in your head to play the Hippo successfully and with confidence!
The Andrew Martin course I am probably biased about because i've loved watching his chess videos for over 20 years, but I think he does a very good job of covering the Hippo and all the plans you need to know.
I now have every Hippo book and course available in the entire world (as far as i'm aware 😁)
Hopefully the posts i've made help encourage Hippo fanatics past, present and future, to dive a little deeper into the swamp, to find out more about the dangerous Hippo! 🦛